[Lowfer] HIFER POWER?

[Ed Phillips]

Dale Rice wrote:
> 
> Ed,
> You are in the ballpark. A lot of folks are talking about 4.5 or 4.52 mw
> into a dipole. Depending on how you figure line losses etc., you could be
> right on. I haven't bothered to figure it out myself.
> A half watt into a rubber ducky could also be about right, or a Kw into a
> pin head.
> Seriously tho, I have been planning a HiFER hand-held for use around here
> using whatever power it takes to give me the right field strength.
> You can use your 50 foot vertical just fine.
> 
> Dale R
> 
> > I have just looked at part 15.225 and find a field strength limit, with
> > no mention of antenna configuration.  If my calculations are correct the
> > power limit would be about 7.4 mW into a short vertical over ground.
> > Approximately right?
> >
> > Big question is about the antenna.  If I can use my present 50 foot
> > vertical it will be very simple for me to get a HIFER beacon on the
> > air.  Am I overlooking something important?  [I realize that this
> > antenna may have a bit of gain, but can adjust the power for that.)
> >
> > Ed

Dale:

	Thanks for the interpretation and plans will proceed at the usually
slow pace.  I wonder if you or anyone else in this group is a whiz at
NEC?  I've been running some MININEC simulations which, if I've done
them right, indicate that feeding the base of the tower I'll be putting
most of the energy up in the air at about 45�, but if I put a whip a bit
over a quarter-wave long down at the base and tilt it away a few degrees
I can get some energy out toward the general elevation of the horizon. 
Any comments on this?

Ed